import java.util.ArrayList;
import java.util.List;
import java.util.Random;

class Card{
    private int rank;
    private String suit;

    public Card(int rank, String suit) {
        this.rank = rank;
        this.suit = suit;
    }

    @Override
    public String toString() {
        return "[ "+this.suit+" "+this.rank+" ]";
    }
}
public class TestDemo0820 {
    private static final String[] suits = {"hong","hei","mei","fang"};

    public static List<Card> buyCard(){
        ArrayList<Card> cards = new ArrayList<>();
        for (int i = 0; i < 4; i++){
            for (int j = 1; j <= 13; j++){
                /*String suit = suits[i];
                int rank = j;
                Card card = new Card(rank,suit);
                cards.add(card);*/
                cards.add(new Card(j,suits[i]));
            }
        }
        return cards;
    }

    public static void swap(List<Card> cards,int i,int j){
        Card tmp = cards.get(i);
        cards.set(i,cards.get(i));
        cards.set(j,tmp);
    }
    public static void shuffle(List<Card> cards) {
        int size = cards.size();
        for (int i = size-1; i > 0; i--){
            Random random = new Random();
            int rand = random.nextInt(i);
            swap(cards,i,rand);
        }

    }
    public static void main(String[] args) {
        List<Card> cards = buyCard();
        System.out.println("买牌:"+cards);
        shuffle(cards);
        System.out.println("洗牌:"+cards);
        System.out.println("揭牌:3个人每个人轮流揭5张牌");

        ArrayList<List<Card>> hand = new ArrayList<>();
        List<Card> hand1 = new ArrayList<>();
        List<Card> hand2 = new ArrayList<>();
        List<Card> hand3 = new ArrayList<>();
        hand.add(hand1);
        hand.add(hand2);
        hand.add(hand3);
        //每个人轮流揭牌
        for (int i = 0; i < 5; i++){
            for (int j = 0; j < 3; j++){
                Card card = cards.remove(0);
                hand.get(j).add(card);
            }
        }
        System.out.println("第1个人的牌："+hand1);
        System.out.println("第2个人的牌："+hand2);
        System.out.println("第3个人的牌："+hand3);
        System.out.println("剩下的牌："+cards);

    }
    public static void main1(String[] args) {
        Card card = new Card(3,"hongtao");
        System.out.println(card);
    }

}
